Final answer:
The ownership of multiple media outlets by Can West Global Communications is an example of media concentration, where a few conglomerates dominate the mass media, affecting information diversity.
Step-by-step explanation:
The Can West Global Communications company owning the Global Television Network, the Edmonton Herald, and the Calgary Herald is an example of media concentration. Media concentration refers to the trend where a few multinational conglomerates dominate the mass media landscape. This includes owning major television networks, movie studios, and publications like newspapers and magazines. Conglomerates like Can West Global Communications can lead to a monopoly over information and potentially limit the diversity of viewpoints available to the public, as policies of the conglomerate influence all of its owned media outlets, affecting both content and distribution.